Locationless caches are a similar to traditional geocaches in that they are found in the great outdoors. However, it is more of a "scavenger" hunt as opposed to a "treasure" hunt. The goal of these caches is to find a specific object somewhere in the world. To log them, you then typically enter the coordinates of where you found the object.
smithwitch123 was recently on the hunt for some Quirky Items to be found while searching for TerraCaches- go check out "Unusual Mailboxes" (LC76U), "You Got Mail!" (LCIO), and "Dead Letter Box?" (LC7TF). Sort by the "category" option to review all of the Quirky Items locationless caches.
In her words:
"I was pretty excited to hunt these Locationless Caches. I mean, how hard can it be to find unusual mailboxes? I've seen them a million times, right? Yep, it's always harder than you think it's going to be! I had to travel all the way from Houston, Texas to Annapolis, Maryland to find the first two caches, which have nearly the same requirements. As far as the last one goes, I'm not sure where the heck I'm going to find that one!
By the way, it is somewhat embarrassing to stand around with a GPS and camera in front of someone's mailbox... but it's the price we pay to log these caches!"